[TheForge] Titanium

[Dan Tull]

chuck,
I was told by some that the only way to harden Ti was work harden.
----- Original Message ----- 
From: "Chuck Robinson" <robi5515 at bellsouth.net>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Sunday, March 06, 2005 10:42 PM
Subject: Re: [TheForge] Titanium


> Right on  Andy.
> The knives are also used by EOD folks because it doesn't
> affect the magnetic fields of magnetic mines and other explosive devices 
> triggered by distorting magnetic fields.
> The knives are also treated with a special hardening process, but being an 
> old fart, with failing memory , I can't recall how it is done.
> Chuck
> ----- Original Message ----- 
> From: "Andrew Vida" <osan at netlabs.net>
> To: "Sponsored by ABANA" <theforge at mailman.qth.net>
> Sent: Saturday, March 05, 2005 11:36 PM
> Subject: Re: [TheForge] Titanium
>
>
>>
>>
>> debmiller at fuse.net wrote:
>>> Hey Guys,
>>> I must admit to forgetting whether or not I asked this question.
>>> I have a welding class with a student interested in forging a blade out 
>>> of titanium.
>>
>> Just this side of useless as a cutting utensil.
>>>
>>> I mentioned that on this lost some people have recommended against 
>>> titanium several times. I cannot remember why.
>>
>> Far too soft. 6-4 alloy used to be the hardest of them (may no longer be 
>> the case... been a few years since I dealt with it).
>>
>> It makes a miserable knife compared to a good steel.
>>>
>>> If titanium is a potential blade material does anyone have a chunk 
>>> roughly 2" x 8" x 1 1/2" or so that you would sell him?
>>
>> You also have to be a bit careful with forging the alloys.  First you 
>> have the issues of safety WRT fumes of vanadium, which may not kill you, 
>> but they won't help you much either.  Hot forging 6-4 is, as I recall, 
>> best accomplished with a hydraulic press.  This can all be looked up in a 
>> Mark's Handbook.  These alloys are not easy to forge the way CP is. In 
>> grinding, they glaze wheels heavily.  And in the end you may have a 
>> really nice looking, but functionally useless knife.  As I recall, 
>> SEAL/UDT has a Ti alloy knife that they use for certain types of 
>> operation.  I have heard that their usefulness is exceptionally limited.
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